:root {
      --primary: #D98BA3;
      --peach: #C9AE8E;
      --bg: #FBF7F1;
      --card: #fff;
      --text: #3B2E33;
      --muted: #93838C;
      --border: #E8DFD1;
      --green: #C9AE8E;
      --red: #e74c3c;
      --gold: #f1c40f;
      --blue: #3498db;
      --deep: #B8607F;
      --glow: rgba(217,139,163,0.4);
    }
    * { box-sizing: border-box; margin: 0; padding: 0; }
    body {
      font-family: 'Nunito', sans-serif;
      background: var(--bg);
      color: var(--text);
      min-height: 100vh;
      overflow-x: hidden;
    }

    /* ═══ 3D SCENE BACKGROUND ═══ */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background:
        radial-gradient(ellipse 80% 60% at 20% 20%, rgba(79,168,157,0.06) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 80%, rgba(255,107,74,0.08) 0%, transparent 60%);
      pointer-events: none;
      z-index: 0;
    }

    /* ═══ TOPNAV ═══ */
    .topnav {
      background: var(--primary);
      padding: 12px 20px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 4px 30px rgba(79,168,157,0.5);
      border-bottom: 1px solid rgba(255,107,74,0.3);
      gap: 8px;
      flex-wrap: nowrap;
    }
    .topnav a { color: rgba(255,255,255,0.85); text-decoration: none; font-weight: 700; font-size: 0.85rem; display: flex; align-items: center; gap: 6px; transition: 0.2s; white-space: nowrap; flex-shrink: 0; }
    .topnav a:hover { color: #fff; }
    .topnav-title { font-family: 'Nunito', sans-serif; font-weight: 800; color: #fff; font-size: 1rem; letter-spacing: 0.04em; text-shadow: 0 1px 3px rgba(0,0,0,0.15); text-align: center; flex: 1; min-width: 0; }
    .topnav-points { display: flex; align-items: center; gap: 5px; background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.55); border-radius: 999px; padding: 5px 12px; cursor: pointer; transition: 0.2s; flex-shrink: 0; }
    .topnav-points:hover { background: rgba(255,255,255,0.3); }
    .topnav-points .pts-val { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 0.95rem; color: #fff; font-weight: 700; }
    .topnav-points .pts-lbl { font-size: 0.68rem; color: rgba(255,255,255,0.85); opacity: 0.9; }

    /* ═══ 3D TOOLS GRID ═══ */
    .tools-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
      max-width: 1200px;
      margin: 24px auto 0;
      padding: 0 20px 80px;
    }
    /* Full-width span cards — catch all inline grid-column variants */
    .tool-card[style*="grid-column: 1 / -1"],
    .tool-card[style*="grid-column: span 2"],
    .tool-card[style*="grid-column:span 2"],
    .tool-card[style*="grid-column:1 / -1"],
    .span-full { grid-column: 1 / -1 !important; max-width: 100%; }

    /* ═══ 3D TOOL CARDS ═══ */
    .tool-card {
      background: var(--card);
      border-radius: 20px;
      padding: 24px 22px;
      border: 1.5px solid var(--border);
      position: relative;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      box-shadow:
        0 4px 0 #B8E0DC,
        0 8px 0 #A5A0E8,
        0 12px 20px rgba(79,168,157,0.12);
      overflow: hidden;
      min-width: 0;
    }
    .tool-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 4px;
      background: var(--primary);
      border-radius: 24px 24px 0 0;
    }
    .tool-card::after {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(255,255,255,0.3);
      border-radius: 24px;
      pointer-events: none;
    }
    .tool-card:hover {
      transform: translateY(-6px);
      box-shadow:
        0 4px 0 #B8E0DC,
        0 8px 0 #A5A0E8,
        0 20px 40px rgba(79,168,157,0.18);
    }
    .tool-card[data-category].hidden-card { display: none; }

    /* Card accent colors by category */
    .tool-card[data-category="student"]::before { background: var(--primary); }
    .tool-card[data-category="teacher"]::before { background: #A78A63; }
    .tool-card[data-category="both"]::before { background: #3498db; }

    .tool-header { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 18px; }
    .tool-icon {
      width: 48px; height: 48px;
      border-radius: 14px;
      background: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      flex-shrink: 0;
      box-shadow: 0 4px 12px rgba(79,168,157,0.3), inset 0 1px 0 rgba(255,255,255,0.2);
    }
    .tool-header h2 { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1rem; color: var(--primary); letter-spacing: 0.02em; line-height: 1.3; }
    .tool-header p { font-size: 0.76rem; color: var(--muted); margin-top: 3px; line-height: 1.4; }
    .tool-badge { display: inline-block; font-size: 0.62rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.1em; padding: 2px 8px; border-radius: 999px; margin-left: 8px; vertical-align: middle; }
    .badge-student { background: #E0DCFF; color: #4338CA; }
    .badge-teacher { background: #d8f5e8; color: #1a6b35; }
    .badge-both { background: #e8eeff; color: #1a2a7a; }
    .badge-free { background: #d8f5e8; color: #0a5a30; }
    .badge-freemium { background: #fff3cd; color: #856404; }
    .badge-paid { background: #fde8e8; color: #4338CA; }

    /* ═══ INPUTS ═══ */
    .tool-card input, .tool-card select, .tool-card textarea {
      width: 100%;
      max-width: 100%;
      padding: 10px 12px;
      border: 2px solid var(--border);
      border-radius: 12px;
      font-family: 'Nunito', sans-serif;
      font-size: 0.88rem;
      color: var(--text);
      background: #F7F6FF;
      margin-bottom: 10px;
      outline: none;
      transition: border 0.2s, box-shadow 0.2s;
      box-shadow: inset 0 2px 4px rgba(79,168,157,0.05);
      min-width: 0;
    }
    .tool-card input:focus, .tool-card select:focus, .tool-card textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79,168,157,0.1), inset 0 2px 4px rgba(79,168,157,0.05);
    }

    /* ═══ BUTTONS (flat, rounded pill style) ═══ */
    .btn {
      background: var(--primary);
      color: #fff;
      border: none;
      padding: 12px 22px;
      border-radius: 999px;
      font-family: 'Nunito', sans-serif;
      font-weight: 800;
      font-size: 0.9rem;
      cursor: pointer;
      transition: transform 0.18s ease, box-shadow 0.18s ease;
      width: 100%;
      margin-top: 6px;
      box-shadow: 0 6px 16px rgba(79,168,157,0.35);
    }
    .btn:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(79,168,157,0.4); }
    .btn:active { transform: translateY(0); box-shadow: 0 4px 10px rgba(79,168,157,0.3); }
    .btn-outline { background: transparent; color: var(--primary); border: 2px solid var(--primary); box-shadow: none; }
    .btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
    .btn-sm { padding: 8px 16px; font-size: 0.82rem; width: auto; }
    .btn-peach { background: var(--peach); color: #fff; box-shadow: 0 6px 16px rgba(232,115,92,0.4); }
    .btn-peach:hover { transform: translateY(-2px); box-shadow: 0 10px 22px rgba(255,107,74,0.45); }
    .btn-green { background: #A78A63; color: #fff; box-shadow: 0 6px 16px rgba(167,138,99,0.35); }
    .btn-green:hover { transform: translateY(-2px); }
    .btn-red { background: #e74c3c; color: #fff; box-shadow: 0 6px 16px rgba(231,76,60,0.35); }
    .btn-red:hover { transform: translateY(-2px); }
    .btn-gold { background: var(--gold); color: #7a5a00; box-shadow: 0 6px 16px rgba(212,168,0,0.3); }

    /* ═══ COUNTDOWN ═══ */
    .countdown-ring { position: relative; width: 140px; height: 140px; margin: 0 auto 12px; filter: drop-shadow(0 4px 15px rgba(79,168,157,0.2)); }
    .countdown-ring svg { transform: rotate(-90deg); }
    .countdown-ring .ring-bg { fill: none; stroke: var(--border); stroke-width: 8; }
    .countdown-ring .ring-fill { fill: none; stroke: url(#ringGrad); stroke-width: 8; stroke-linecap: round; transition: stroke-dashoffset 0.8s ease; }
    .countdown-days { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; }
    .countdown-days .num { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 2rem; color: var(--primary); line-height: 1; }
    .countdown-days .lbl { font-size: 0.7rem; color: var(--muted); font-weight: 700; text-transform: uppercase; }
    .saved-exam-item { display: flex; justify-content: space-between; align-items: center; background: var(--primary-light,#E6F5F3); border: 1.5px solid var(--border); border-radius: 12px; padding: 10px 14px; margin-bottom: 8px; font-size: 0.83rem; cursor: pointer; transition: 0.2s; box-shadow: 0 2px 8px rgba(79,168,157,0.08); }
    .saved-exam-item:hover { border-color: var(--primary); transform: translateX(4px); }
    .saved-exam-item strong { color: var(--primary); }
    .saved-exam-item .days-left { font-weight: 700; color: var(--primary); font-size: 1rem; font-family: 'Nunito', sans-serif; font-weight: 800; }
    .saved-exam-item button { background: none; border: none; color: #e74c3c; cursor: pointer; font-size: 0.9rem; }

    /* ═══ STREAK ═══ */
    .streak-display { display: flex; align-items: center; justify-content: center; gap: 24px; margin-bottom: 16px; background: var(--primary-light,#E6F5F3); border-radius: 16px; padding: 16px; border: 1px solid var(--border); }
    .streak-flame { font-size: 2.5rem; animation: flicker 1.5s infinite alternate; filter: drop-shadow(0 0 10px rgba(255,100,0,0.4)); }
    @keyframes flicker { from { transform: scale(1) rotate(-3deg); } to { transform: scale(1.12) rotate(3deg); } }
    .streak-stat { text-align: center; }
    .streak-count { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 2rem; color: var(--primary); line-height: 1; }
    .streak-label { color: var(--muted); font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }

    /* ═══ CALENDAR ═══ */
    .cal-nav { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
    .cal-nav button { background: none; border: 2px solid var(--border); border-radius: 10px; padding: 5px 12px; cursor: pointer; color: var(--primary); font-weight: 800; font-size: 1rem; transition: 0.15s; font-family: 'Nunito', sans-serif; }
    .cal-nav button:hover { background: var(--peach); border-color: var(--peach); }
    .cal-month-title { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1rem; color: var(--primary); font-weight: 700; }
    .cal-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 4px; margin-bottom: 12px; }
    .cal-dow { text-align: center; font-size: 0.68rem; font-weight: 800; color: var(--muted); padding: 2px 0; }
    .cal-day { aspect-ratio: 1; border-radius: 10px; display: flex; flex-direction: column; align-items: center; justify-content: center; font-size: 0.72rem; font-weight: 700; cursor: pointer; border: 2px solid transparent; transition: 0.15s; position: relative; background: var(--bg); color: var(--muted); }
    .cal-day:hover { border-color: var(--peach); }
    .cal-day.today { border-color: var(--primary); color: var(--primary); background: #EEEBFF; }
    .cal-day.has-data { background: var(--primary); color: #fff; box-shadow: 0 2px 8px rgba(79,168,157,0.3); }
    .cal-day.has-data.light { background: #EDEAFF; color: var(--primary); }
    .cal-day.has-data.medium { background: #E8532F; color: #fff; }
    .cal-day.empty { background: none; cursor: default; }
    .cal-day .cal-hrs { font-size: 0.6rem; font-weight: 600; opacity: 0.85; line-height: 1; }
    .log-form { background: var(--primary-light,#E6F5F3); border-radius: 16px; padding: 16px; margin-top: 12px; border: 1px solid var(--border); }
    .log-form-title { font-weight: 800; color: var(--primary); font-size: 0.9rem; margin-bottom: 12px; }
    .session-row { display: flex; gap: 6px; align-items: center; margin-bottom: 8px; }
    .session-row input, .session-row select { margin: 0; }
    .session-list { margin-top: 8px; }
    .session-item { display: flex; justify-content: space-between; align-items: center; background: var(--card); border-radius: 10px; padding: 8px 12px; margin-bottom: 6px; font-size: 0.82rem; box-shadow: 0 2px 6px rgba(79,168,157,0.06); }
    .session-item strong { color: var(--primary); }
    .session-item button { background: none; border: none; color: #e74c3c; cursor: pointer; font-size: 0.9rem; }

    /* ═══ SPIN WHEEL ═══ */
    .wheel-wrap { display: flex; flex-direction: column; align-items: center; gap: 14px; }
    .wheel-container { position: relative; width: 200px; height: 200px; filter: drop-shadow(0 8px 20px rgba(79,168,157,0.3)); }
    .wheel-arrow { position: absolute; top: -14px; left: 50%; transform: translateX(-50%); font-size: 1.6rem; z-index: 2; filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3)); }
    canvas#wheelCanvas { border-radius: 50%; }
    .wheel-result { text-align: center; min-height: 50px; font-size: 0.9rem; font-weight: 700; color: var(--primary); background: var(--primary-light,#E6F5F3); border-radius: 14px; padding: 12px 16px; width: 100%; border: 1.5px solid var(--border); }

    /* ═══ POMODORO ═══ */
    .pomo-display { text-align: center; margin: 12px 0; }
    .pomo-mode { font-size: 0.82rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.15em; color: var(--muted); margin-bottom: 8px; }
    .pomo-ring { position: relative; width: 150px; height: 150px; margin: 0 auto 8px; filter: drop-shadow(0 6px 20px rgba(79,168,157,0.2)); }
    .pomo-ring svg { transform: rotate(-90deg); }
    .pomo-ring .pr-bg { fill: none; stroke: var(--border); stroke-width: 10; }
    .pomo-ring .pr-fill { fill: none; stroke: var(--primary); stroke-width: 10; stroke-linecap: round; transition: stroke-dashoffset 1s linear; }
    .pomo-ring .pomo-time-inside { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1.6rem; color: var(--primary); white-space: nowrap; }
    .pomo-controls { display: flex; gap: 8px; }
    .pomo-controls .btn { flex: 1; }
    .pomo-sessions { display: flex; justify-content: center; gap: 8px; margin-top: 12px; }
    .pomo-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--border); transition: all 0.3s; box-shadow: inset 0 1px 3px rgba(0,0,0,0.1); }
    .pomo-dot.done { background: var(--primary); box-shadow: 0 0 8px rgba(79,168,157,0.4); }

    /* ═══ PLANNER ═══ */
    .planner-step { margin-bottom: 12px; }
    .planner-step label { display: block; font-size: 0.82rem; font-weight: 800; color: var(--muted); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.08em; }
    .task-input-row { display: flex; gap: 8px; margin-bottom: 8px; align-items: center; }
    .task-input-row input { margin: 0; flex: 1; }
    .task-badge { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 10px; font-size: 0.78rem; font-weight: 700; margin: 3px; }
    .task-badge.high { background: #fde8e8; color: #4338CA; border: 1px solid #f5b8b8; }
    .task-badge.medium { background: #EEEBFF; color: #7a4a10; border: 1px solid #E3DEFF; }
    .task-badge.low { background: #e8f5ee; color: #1a5a30; border: 1px solid #a8d8b8; }
    .task-badge button { background: none; border: none; cursor: pointer; font-size: 0.85rem; color: inherit; padding: 0; line-height: 1; }
    .planner-table { width: 100%; border-collapse: collapse; font-size: 0.75rem; margin-top: 12px; border-radius: 12px; overflow: hidden; }
    .planner-table th { background: var(--primary); color: #fff; padding: 8px 4px; text-align: center; font-weight: 700; }
    .planner-table td { border: 1px solid var(--border); padding: 5px 4px; text-align: center; color: var(--muted); font-size: 0.72rem; vertical-align: top; min-width: 60px; }
    .planner-table td.has-task { background: #EEEBFF; color: var(--primary); font-weight: 700; }
    .planner-table td.high-task { background: #fde8e8; color: #4338CA; font-weight: 800; }
    .planner-table td.low-task { background: #e8f5ee; color: #1a5a30; font-weight: 700; }
    .planner-table td.rest-cell { background: #f5f5f5; color: #aaa; font-style: italic; }
    .rest-day-btn { padding: 7px 16px; border-radius: 10px; border: 2px solid var(--border); background: var(--bg); font-size: 0.85rem; font-weight: 700; cursor: pointer; color: var(--primary); transition: 0.2s; font-family: 'Nunito', sans-serif; }
    .rest-day-btn.rest-active { background: #fde8e8; color: #4338CA; border-color: #f5b8b8; }

    /* ═══ GRADE CALC ═══ */
    .grade-board-tabs { display: flex; gap: 6px; margin-bottom: 14px; }
    .grade-board-tab { flex: 1; padding: 9px; border-radius: 12px; border: 2px solid var(--border); background: var(--bg); font-size: 0.82rem; font-weight: 700; cursor: pointer; color: var(--primary); transition: 0.2s; text-align: center; font-family: 'Nunito', sans-serif; }
    .grade-board-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 3px 0 #15112B; }
    .grade-mode-selector { display: flex; gap: 6px; margin-bottom: 12px; }
    .grade-mode-btn { flex: 1; padding: 7px; border-radius: 10px; border: 2px solid var(--border); background: var(--bg); font-size: 0.8rem; font-weight: 700; cursor: pointer; color: var(--primary); transition: 0.2s; text-align: center; font-family: 'Nunito', sans-serif; }
    .grade-mode-btn.active { background: var(--peach); border-color: var(--peach); color: var(--primary); }
    .grade-row { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; }
    .grade-row input, .grade-row select { margin: 0; }
    .grade-row .remove-btn { background: none; border: none; color: #e74c3c; cursor: pointer; font-size: 1.1rem; flex-shrink: 0; }
    .grade-result-box { background: var(--primary-light,#E6F5F3); border: 2px solid var(--border); border-radius: 16px; padding: 18px; margin-top: 12px; text-align: center; }
    .grade-result-box .grade-letter { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 3.5rem; line-height: 1; text-shadow: 0 3px 15px rgba(79,168,157,0.2); }
    .grade-result-box .grade-pct { font-size: 1.5rem; font-weight: 800; color: var(--primary); margin-top: 4px; }
    .grade-result-box .grade-lbl { font-size: 0.78rem; color: var(--muted); margin-top: 4px; }
    .grade-bar { height: 10px; border-radius: 999px; background: var(--border); margin: 12px 0 4px; overflow: hidden; }
    .grade-bar-fill { height: 100%; border-radius: 999px; background: var(--primary); transition: width 0.6s ease; }
    .target-grade-section { background: var(--primary-light,#E6F5F3); border-radius: 14px; padding: 14px; margin-top: 12px; border: 1px solid var(--border); }
    .target-grade-section label { font-size: 0.78rem; font-weight: 800; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; display: block; margin-bottom: 6px; }
    .target-result { font-size: 0.88rem; color: var(--primary); font-weight: 700; margin-top: 8px; line-height: 1.6; }
    .boundary-info { background: #e8f0fd; border: 1px solid #b8c8f5; border-radius: 12px; padding: 10px 12px; margin-bottom: 12px; font-size: 0.8rem; }
    .boundary-table { width: 100%; border-collapse: collapse; font-size: 0.78rem; margin-top: 8px; }
    .boundary-table th { background: var(--primary); color: #fff; padding: 6px 8px; }
    .boundary-table td { border: 1px solid var(--border); padding: 5px 8px; text-align: center; }
    .boundary-table tr:nth-child(even) td { background: #FAFAFF; }
    .ums-info { font-size: 0.75rem; color: var(--muted); margin-top: 6px; line-height: 1.5; }
    .boundary-fetch-result { background: var(--card); border: 2px solid var(--border); border-radius: 14px; padding: 14px; margin: 10px 0; display: none; }
    .boundary-fetch-result h4 { color: var(--primary); margin-bottom: 8px; font-size: 0.92rem; }
    .boundary-ai-note { background: #fff3cd; border: 1px solid #ffc107; border-radius: 8px; padding: 8px 12px; font-size: 0.75rem; color: #856404; margin-top: 8px; }

    /* ═══ PAST PAPERS ═══ */
    .pp-board-tabs { display: flex; gap: 6px; margin-bottom: 14px; }
    .pp-board-tab { flex: 1; padding: 11px; border-radius: 12px; border: 2px solid var(--border); background: var(--bg); font-size: 0.85rem; font-weight: 800; cursor: pointer; color: var(--primary); transition: 0.2s; text-align: center; font-family: 'Nunito', sans-serif; box-shadow: 0 3px 0 var(--border); }
    .pp-board-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 3px 0 #15112B; }
    .pp-subject-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 8px; margin-bottom: 14px; }
    .pp-subject-card { background: var(--bg); border: 2px solid var(--border); border-radius: 14px; padding: 12px; cursor: pointer; transition: 0.2s; text-align: center; box-shadow: 0 3px 0 var(--border); }
    .pp-subject-card:hover, .pp-subject-card.selected { border-color: var(--primary); background: #EEEBFF; transform: translateY(-2px); box-shadow: 0 5px 0 #B8E0DC; }
    .pp-subject-card .pp-subj-icon { font-size: 1.5rem; margin-bottom: 4px; }
    .pp-subject-card .pp-subj-name { font-size: 0.8rem; font-weight: 800; color: var(--primary); }
    .pp-subject-card .pp-subj-code { font-size: 0.68rem; color: var(--muted); }
    .pp-series-filters { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 12px; align-items: center; }
    .pp-series-filters label { font-size: 0.8rem; font-weight: 700; color: var(--muted); }
    .pp-filter-chip { padding: 6px 14px; border-radius: 999px; border: 2px solid var(--border); background: var(--bg); font-size: 0.78rem; font-weight: 700; cursor: pointer; color: var(--primary); transition: 0.2s; font-family: 'Nunito', sans-serif; }
    .pp-filter-chip.active { background: var(--primary); color: #fff; border-color: var(--primary); }
    .pp-results { display: flex; flex-direction: column; gap: 8px; max-height: 480px; overflow-y: auto; overflow-x: hidden; }
    .pp-paper-item { background: var(--bg); border: 1.5px solid var(--border); border-radius: 14px; padding: 12px 14px; display: flex; align-items: center; justify-content: space-between; gap: 10px; transition: 0.2s; flex-wrap: wrap; }
    .pp-paper-item:hover { border-color: var(--primary); background: #EEEBFF; }
    .pp-paper-info .pp-paper-title { font-weight: 800; font-size: 0.88rem; color: var(--primary); }
    .pp-paper-info .pp-paper-meta { font-size: 0.72rem; color: var(--muted); margin-top: 2px; }
    .pp-paper-links { display: flex; gap: 6px; flex-shrink: 0; flex-wrap: wrap; }
    .pp-link-btn { padding: 6px 10px; border-radius: 8px; border: 2px solid var(--border); background: var(--bg); font-size: 0.75rem; font-weight: 700; cursor: pointer; text-decoration: none; color: var(--primary); transition: 0.2s; display: inline-flex; align-items: center; gap: 4px; font-family: 'Nunito', sans-serif; }
    .pp-link-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
    .pp-link-btn.ms { border-color: #A78A63; color: #6B5432; }
    .pp-link-btn.ms:hover { background: #A78A63; color: #fff; }
    .pp-link-btn.er { border-color: #3498db; color: #1a5a8a; }
    .pp-link-btn.er:hover { background: #3498db; color: #fff; }
    .pp-empty { text-align: center; padding: 28px; color: var(--muted); font-size: 0.88rem; }
    .pp-site-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(160px, 100%), 1fr)); gap: 10px; margin-top: 16px; }
    .pp-site-card { background: var(--bg); border: 2px solid var(--border); border-radius: 14px; padding: 16px; text-align: center; transition: 0.2s; box-shadow: 0 3px 0 var(--border); }
    .pp-site-card:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: 0 6px 0 #B8E0DC; }
    .pp-site-card .pp-site-icon { font-size: 1.7rem; margin-bottom: 6px; }
    .pp-site-card .pp-site-name { font-weight: 800; font-size: 0.85rem; color: var(--primary); }
    .pp-site-card .pp-site-desc { font-size: 0.72rem; color: var(--muted); margin-top: 3px; line-height: 1.4; }

    /* ═══ NOTES HUB ═══ */
    .notes-hub-tabs { display: flex; gap: 6px; margin-bottom: 14px; flex-wrap: wrap; }
    .notes-hub-tab { flex: 1; min-width: 100px; padding: 9px; border-radius: 12px; border: 2px solid var(--border); background: var(--bg); font-size: 0.78rem; font-weight: 800; cursor: pointer; color: var(--primary); transition: 0.2s; text-align: center; font-family: 'Nunito', sans-serif; }
    .notes-hub-tab.active { background: var(--primary); color: #fff; border-color: var(--primary); }
    .nh-ai-result { background: var(--card); border: 2px solid var(--border); border-radius: 14px; padding: 18px; margin-top: 14px; font-size: 0.88rem; line-height: 1.7; max-height: 420px; overflow-y: auto; display: none; }
    .nh-ai-result h3 { font-family: 'Nunito', sans-serif; font-weight: 800; color: var(--primary); margin-bottom: 10px; }
    .nh-ai-result h4 { color: var(--primary); margin: 10px 0 4px; font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 0.9rem; }
    .nh-ai-result ul { padding-left: 18px; margin: 4px 0; }
    .nh-ai-result li { margin-bottom: 3px; }
    .nh-online-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(180px, 100%), 1fr)); gap: 12px; }
    .nh-online-card { background: var(--bg); border: 2px solid var(--border); border-radius: 14px; padding: 16px; transition: 0.2s; box-shadow: 0 3px 0 var(--border); }
    .nh-online-card:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: 0 6px 0 #B8E0DC; }
    .nh-online-card .nhoc-icon { font-size: 1.6rem; margin-bottom: 6px; }
    .nh-online-card .nhoc-name { font-weight: 800; font-size: 0.85rem; color: var(--primary); }
    .nh-online-card .nhoc-desc { font-size: 0.72rem; color: var(--muted); margin-top: 3px; line-height: 1.4; }
    .nh-donate-area { background: var(--primary-light,#E6F5F3); border-radius: 16px; padding: 18px; border: 2px solid var(--peach); }
    .nh-donate-title { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1rem; color: var(--primary); margin-bottom: 6px; }
    .nh-donate-desc { font-size: 0.82rem; color: var(--muted); margin-bottom: 14px; line-height: 1.5; }
    .nh-points-earn { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
    .nh-earn-item { flex: 1; min-width: 100px; background: var(--card); border: 2px solid var(--border); border-radius: 12px; padding: 12px; text-align: center; box-shadow: 0 3px 0 var(--border); }
    .nh-earn-item .nei-pts { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1.4rem; color: var(--primary); }
    .nh-earn-item .nei-lbl { font-size: 0.7rem; color: var(--muted); font-weight: 700; text-transform: uppercase; letter-spacing: 0.06em; }

    /* ═══ ATTENDANCE ═══ */
    .att-table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; width: 100%; }
    .att-table { width: 100%; border-collapse: collapse; font-size: 0.8rem; margin-top: 10px; min-width: 480px; }
    .att-table th { background: var(--primary); color: #fff; padding: 8px 8px; text-align: left; font-weight: 700; font-size: 0.75rem; }
    .att-table td { border: 1px solid var(--border); padding: 6px 8px; vertical-align: middle; }
    .att-table tr:nth-child(even) td { background: #FAFAFF; }
    .att-btn { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; border-radius: 10px; border: none; cursor: pointer; font-size: 0.9rem; transition: 0.15s; font-weight: 700; }
    .att-btn.present { background: #d4f5e2; color: #1a7a40; }
    .att-btn.absent { background: #fde8e8; color: #4338CA; }
    .att-btn.late { background: #fff3cd; color: #856404; }
    .att-btn.unmarked { background: var(--border); color: var(--muted); }
    .att-btn:hover { transform: scale(1.15); }
    .att-pct { font-weight: 800; font-size: 0.88rem; }
    .att-pct.good { color: #1a7a40; }
    .att-pct.warn { color: #856404; }
    .att-pct.bad { color: #4338CA; }
    .att-date-chip { padding: 5px 12px; border-radius: 999px; background: var(--primary); color: #fff; font-size: 0.75rem; font-weight: 700; cursor: pointer; transition: 0.15s; }
    .att-date-chip:hover { background: #e74c3c; }
    .att-summary { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
    .att-stat { flex: 1; min-width: 70px; background: var(--bg); border: 2px solid var(--border); border-radius: 12px; padding: 10px; text-align: center; box-shadow: 0 3px 0 var(--border); }
    .att-stat strong { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1.3rem; color: var(--primary); display: block; }
    .att-stat span { font-size: 0.68rem; color: var(--muted); font-weight: 700; text-transform: uppercase; }

    /* ═══ STICKY NOTES ═══ */
    .color-picker { display: flex; gap: 6px; align-items: center; }
    .color-dot { width: 24px; height: 24px; border-radius: 50%; cursor: pointer; border: 2px solid transparent; transition: 0.15s; flex-shrink: 0; }
    .color-dot.selected { border-color: var(--primary); transform: scale(1.25); box-shadow: 0 0 8px rgba(79,168,157,0.3); }
    .notes-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; max-height: 360px; overflow-y: auto; padding: 2px; }
    .sticky-note { border-radius: 14px; padding: 14px; position: relative; min-height: 100px; font-size: 0.82rem; line-height: 1.5; word-break: break-word; box-shadow: 0 4px 0 rgba(0,0,0,0.1), 0 8px 20px rgba(0,0,0,0.08); transition: transform 0.2s; }
    .sticky-note:hover { transform: translateY(-3px) rotate(-1deg); }
    .sticky-note .note-delete { position: absolute; top: 6px; right: 8px; background: none; border: none; font-size: 0.85rem; cursor: pointer; opacity: 0; transition: opacity 0.2s; color: rgba(0,0,0,0.4); }
    .sticky-note:hover .note-delete { opacity: 1; }
    .sticky-note .note-time { font-size: 0.65rem; opacity: 0.6; margin-top: 8px; display: block; }
    .notes-empty { text-align: center; padding: 30px; color: var(--muted); font-size: 0.88rem; grid-column: 1/-1; }

    /* ═══ PROGRESS REPORT ═══ */
    .report-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 10px; }
    .report-form-grid input, .report-form-grid select { margin: 0; }
    .report-slider-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
    .report-slider-row label { font-size: 0.82rem; font-weight: 700; color: var(--muted); min-width: 90px; }
    .report-slider-row input[type=range] { flex: 1; accent-color: var(--primary); margin: 0; background: none; border: none; padding: 0; }
    .report-slider-row .slider-val { font-weight: 800; color: var(--primary); min-width: 36px; text-align: right; font-family: 'Nunito', sans-serif; font-weight: 800; }
    .report-preview { background: var(--bg); border: 2px solid var(--border); border-radius: 14px; padding: 16px; margin-top: 12px; font-size: 0.85rem; line-height: 1.7; color: var(--text); white-space: pre-wrap; font-style: italic; display: none; }

    /* ═══ TIMETABLE ═══ */
    .tt-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; width: 100%; }
    .tt-grid { width: 100%; border-collapse: collapse; font-size: 0.72rem; margin-top: 10px; min-width: 480px; }
    .tt-grid th { background: var(--primary); color: #fff; padding: 8px 4px; text-align: center; font-weight: 700; font-size: 0.7rem; }
    .tt-grid td { border: 1px solid var(--border); padding: 3px; height: 40px; vertical-align: middle; text-align: center; min-width: 55px; position: relative; }
    .tt-cell { background: #EEEBFF; border-radius: 8px; padding: 3px 4px; font-size: 0.68rem; font-weight: 700; color: var(--primary); cursor: pointer; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; transition: 0.15s; }
    .tt-cell:hover { background: var(--peach); }
    .tt-cell.empty-cell { background: none; color: var(--muted); font-size: 0.65rem; cursor: pointer; }
    .tt-cell.empty-cell:hover { background: #EEEBFF; color: var(--primary); }
    .tt-cell .tt-room { font-size: 0.6rem; font-weight: 400; opacity: 0.8; }
    .tt-add-modal { position: fixed; inset: 0; background: rgba(0,0,0,0.6); display: flex; align-items: center; justify-content: center; z-index: 999; backdrop-filter: blur(4px); }
    .tt-modal-inner { background: var(--card); border-radius: 20px; padding: 26px; width: 90%; max-width: 340px; box-shadow: 0 20px 60px rgba(0,0,0,0.3); }
    .tt-modal-inner h3 { color: var(--primary); margin-bottom: 16px; font-family: 'Nunito', sans-serif; font-weight: 800; }
    .edit-cell-btns { display: flex; gap: 8px; }

    /* ═══ STUDENT APPS ═══ */
    .app-card { background: var(--bg); border: 2px solid var(--border); border-radius: 16px; padding: 16px; transition: 0.2s; display: flex; flex-direction: column; gap: 6px; box-shadow: 0 3px 0 var(--border); }
    .app-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: 0 8px 0 #B8E0DC, 0 12px 24px rgba(79,168,157,0.12); }
    .app-card .app-icon { font-size: 1.9rem; }
    /* Dashboard-icons.com-style square logo tile (real brand icons, with an emoji fallback baked in via JS) */
    .app-icon-tile { width: 40px; height: 40px; border-radius: 11px; background: #fff; display: flex; align-items: center; justify-content: center; box-shadow: 0 2px 8px rgba(0,0,0,0.1); flex-shrink: 0; padding: 7px; }
    .app-icon-tile img { width: 100%; height: 100%; object-fit: contain; }
    body.dark .app-icon-tile { background: rgba(255,255,255,0.94); }
    .app-card .app-name { font-weight: 800; font-size: 0.9rem; color: var(--primary); }
    .app-cat { font-size: 0.68rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; padding: 2px 8px; border-radius: 999px; display: inline-block; }
    .app-card .app-desc { font-size: 0.78rem; color: var(--muted); line-height: 1.5; flex: 1; }
    .app-cat.productivity { background: #e8f5ee; color: #1a6b35; }
    .app-cat.notes { background: #EEEBFF; color: #4338CA; }
    .app-cat.focus { background: #f0e8fd; color: #4a1a7a; }
    .app-cat.revision { background: #e8eeff; color: #1a2a8a; }
    .app-cat.ai { background: #fde8f5; color: #7a1a5a; }
    .app-cat.math { background: #e8f5ee; color: #0a5a30; }
    .app-cat.writing { background: #fff3cd; color: #856404; }
    .app-cat.generator { background: #e8f0fd; color: #1a3a7a; }
    .app-cat.science { background: #fde8e8; color: #7a1a2a; }
    .app-cat.language { background: #f5f0e8; color: #5a4a2a; }
    .app-cat.research { background: #e0f7fa; color: #006064; }

    /* ═══ FREE RESOURCE BADGE ═══ */
    .resource-free-tag { display: inline-block; font-size: 0.6rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.08em; padding: 2px 6px; border-radius: 999px; margin-left: 4px; vertical-align: middle; }
    .tag-free { background: #d4f5e2; color: #0a5a30; }
    .tag-freemium { background: #fff3cd; color: #856404; }
    .tag-paid { background: #fde8e8; color: #4338CA; }

    /* ═══ GENERATOR CARDS ═══ */
    .gen-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(180px, 100%), 1fr)); gap: 14px; margin-top: 4px; }
    .gen-card {
      background: var(--bg);
      border: 2px solid var(--border);
      border-radius: 18px;
      padding: 20px 16px;
      text-align: center;
      transition: all 0.25s;
      box-shadow: 0 4px 0 var(--border);
      position: relative;
      overflow: hidden;
    }
    .gen-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 3px;
      background: var(--primary);
    }
    .gen-card:hover {
      border-color: var(--primary);
      transform: translateY(-5px);
      box-shadow: 0 8px 0 #B8E0DC, 0 14px 28px rgba(79,168,157,0.15);
    }
    .gen-card .gen-icon { font-size: 2rem; margin-bottom: 8px; display: block; filter: drop-shadow(0 2px 6px rgba(79,168,157,0.2)); }
    .gen-card .gen-name { font-weight: 800; font-size: 0.9rem; color: var(--primary); margin-bottom: 6px; }
    .gen-card .gen-desc { font-size: 0.75rem; color: var(--muted); line-height: 1.4; margin-bottom: 10px; }
    .gen-card .gen-tags { display: flex; gap: 4px; justify-content: center; flex-wrap: wrap; margin-bottom: 10px; }

    /* ═══ UPLOAD ZONE ═══ */
    .upload-zone { border: 2px dashed var(--border); border-radius: 16px; padding: 24px; text-align: center; cursor: pointer; transition: 0.2s; background: var(--bg); margin-bottom: 12px; }
    .upload-zone:hover, .upload-zone.dragover { border-color: var(--primary); background: #EEEBFF; }
    .upload-zone .upload-icon { font-size: 2rem; margin-bottom: 8px; }
    .upload-zone p { font-size: 0.85rem; color: var(--muted); margin: 0; }
    .upload-zone strong { color: var(--primary); }
    .upload-zone input[type=file] { display: none; }
    .file-badge { display: inline-flex; align-items: center; gap: 8px; background: #EEEBFF; border: 2px solid var(--peach); border-radius: 12px; padding: 8px 14px; font-size: 0.82rem; font-weight: 700; color: var(--primary); margin-bottom: 12px; width: 100%; }
    .file-badge button { margin-left: auto; background: none; border: none; color: #e74c3c; cursor: pointer; font-size: 1rem; }

    /* ═══ SPINNER ═══ */
    .quiz-generating { text-align: center; padding: 24px; color: var(--muted); font-size: 0.9rem; }
    .spinner { width: 40px; height: 40px; border: 3px solid var(--border); border-top-color: var(--primary); border-radius: 50%; animation: spin 0.8s linear infinite; margin: 0 auto 12px; }
    @keyframes spin { to { transform: rotate(360deg); } }

    /* ═══ POINTS PANEL ═══ */
    .pts-panel { position: fixed; top: 0; right: -380px; width: 360px; height: 100vh; background: var(--card); border-left: 2px solid var(--border); z-index: 200; transition: right 0.3s ease; overflow-y: auto; box-shadow: -15px 0 50px rgba(79,168,157,0.2); }
    .pts-panel.open { right: 0; }
    .pts-panel-header { background: var(--primary); padding: 22px; display: flex; justify-content: space-between; align-items: center; }
    .pts-panel-header h3 { font-family: 'Nunito', sans-serif; font-weight: 800; color: #fff; font-size: 1.2rem; }
    .pts-panel-header button { background: none; border: none; color: var(--peach); font-size: 1.3rem; cursor: pointer; }
    .pts-balance { background: var(--primary); margin: 0 16px 16px; border-radius: 18px; padding: 22px; text-align: center; box-shadow: 0 6px 20px rgba(79,168,157,0.3); }
    .pts-balance .pb-lbl { font-size: 0.75rem; color: var(--peach); font-weight: 700; text-transform: uppercase; letter-spacing: 0.1em; }
    .pts-balance .pb-val { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 3.5rem; color: #fff; line-height: 1; margin: 8px 0; text-shadow: 0 0 20px rgba(255,107,74,0.5); }
    .pts-balance .pb-sub { font-size: 0.8rem; color: var(--peach); opacity: 0.8; }
    .pts-section { padding: 0 16px 16px; }
    .pts-section-title { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 0.95rem; color: var(--primary); margin-bottom: 10px; border-bottom: 1px solid var(--border); padding-bottom: 6px; }
    .pts-reward-item { background: var(--bg); border: 2px solid var(--border); border-radius: 14px; padding: 12px; margin-bottom: 8px; display: flex; justify-content: space-between; align-items: center; }
    .pts-reward-item .pri-info .pri-name { font-weight: 800; font-size: 0.88rem; color: var(--primary); }
    .pts-reward-item .pri-info .pri-desc { font-size: 0.72rem; color: var(--muted); margin-top: 2px; }
    .pts-reward-item .pri-cost { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1.2rem; color: var(--primary); font-weight: 700; white-space: nowrap; }
    .pts-log { max-height: 240px; overflow-y: auto; }
    .pts-log-item { display: flex; justify-content: space-between; align-items: center; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.82rem; }
    .pts-log-item .pli-pts.earn { color: #1a7a40; font-weight: 700; }
    .pts-log-item .pli-pts.spend { color: #e74c3c; font-weight: 700; }
    .pts-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 199; display: none; backdrop-filter: blur(3px); }
    .pts-overlay.open { display: block; }
    .pts-toast { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%) translateY(80px); background: var(--primary); color: #fff; padding: 12px 22px; border-radius: 999px; font-size: 0.9rem; font-weight: 700; z-index: 300; transition: transform 0.4s cubic-bezier(0.34,1.56,0.64,1); white-space: nowrap; box-shadow: 0 6px 20px rgba(79,168,157,0.4); }
    .pts-toast.show { transform: translateX(-50%) translateY(0); }
    .pts-leaderboard { display: flex; flex-direction: column; gap: 6px; }
    .pts-leader-item { display: flex; align-items: center; gap: 10px; background: var(--bg); border-radius: 12px; padding: 8px 12px; }
    .pts-leader-rank { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1.1rem; color: var(--primary); min-width: 24px; }
    .pts-leader-name { flex: 1; font-size: 0.85rem; font-weight: 700; }
    .pts-leader-pts { font-weight: 800; color: var(--primary); font-size: 0.88rem; font-family: 'Nunito', sans-serif; font-weight: 800; }
    .pts-leader-item:nth-child(1) { background: #fff9e6; border: 2px solid #f1c40f; }
    .pts-leader-item:nth-child(2) { background: #f8f8f8; border: 2px solid #bdc3c7; }
    .pts-leader-item:nth-child(3) { background: #F4F2FF; border: 2px solid #e67e22; }

    .instructor-btn { padding: 8px 16px; border-radius: 12px; border: 2px solid var(--border); background: var(--bg); font-size: 0.82rem; font-weight: 700; cursor: pointer; color: var(--primary); transition: 0.2s; font-family: 'Nunito', sans-serif; box-shadow: 0 3px 0 var(--border); }
    .instructor-btn.selected, .instructor-btn:hover { background: var(--primary); color: #fff; border-color: var(--primary); box-shadow: 0 3px 0 #15112B; }

    /* ═══ FLOATING WHATSAPP ═══ */
    #whatsappButton { position: fixed; bottom: 24px; right: 24px; width: 64px; height: 64px; z-index: 1000; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 20px rgba(0,0,0,0.3); border-radius: 50%; transition: 0.3s; animation: pulse 2.5s infinite; }
    #whatsappButton img { width: 100%; height: 100%; border-radius: 50%; }
    #whatsappButton:hover { transform: scale(1.12); box-shadow: 0 10px 30px rgba(0,0,0,0.4); }
    @keyframes pulse { 0%,100%{transform:scale(1)} 50%{transform:scale(1.06)} }
    #whatsappButton::after { content:"Chat with us"; position:absolute; bottom:74px; right:0; background:var(--primary); color:#fff; padding:6px 12px; border-radius:8px; font-size:12px; font-weight:700; opacity:0; pointer-events:none; transition:0.3s; white-space:nowrap; box-shadow:0 4px 12px rgba(79,168,157,0.3); }
    #whatsappButton:hover::after { opacity:1; bottom:80px; }

    /* ═══ FOOTER ═══ */
    .tools-footer { text-align: center; padding: 36px; color: var(--muted); font-size: 0.85rem; border-top: 2px solid var(--border); background: var(--bg); }
    .tools-footer a { color: var(--primary); font-weight: 700; text-decoration: none; }

    /* ═══ RESPONSIVE — TABLET ═══ */
    @media (max-width: 900px) {
      .tools-grid {
        grid-template-columns: 1fr;
        gap: 18px;
        padding: 0 14px 60px;
      }
      .tool-card[style*="grid-column"],
      .tool-card { grid-column: 1 / -1 !important; }
      .gen-grid { grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); }
      .pp-subject-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
      .nh-online-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
    }

    /* ═══ RESPONSIVE — MOBILE ═══ */
    @media (max-width: 600px) {
      .topnav { padding: 10px 14px; }
      .topnav-title { font-size: 0.85rem; }
      .topnav a { font-size: 0.75rem; }
      .topnav a span { display: none; }

      .hero { padding: 44px 16px 40px; }
      .hero-badge { font-size: 0.68rem; padding: 5px 12px; }
      .shape { display: none; }

      .tools-tabs { padding: 14px 12px 0; gap: 6px; }
      .tools-tab { padding: 7px 13px; font-size: 0.76rem; border-radius: 10px; }

      /* Force 1-column grid on mobile */
      .tools-grid {
        grid-template-columns: 1fr !important;
        padding: 0 12px 50px;
        gap: 14px;
        margin-top: 16px;
      }
      /* All cards full-width on mobile, no overflow */
      .tools-grid .tool-card {
        grid-column: 1 / -1 !important;
        width: 100% !important;
        min-width: 0 !important;
        overflow: hidden;
      }

      .tool-card { padding: 18px 16px; border-radius: 16px; }
      .tool-icon { width: 42px; height: 42px; font-size: 1.2rem; border-radius: 12px; }
      .tool-header h2 { font-size: 0.88rem; }
      .tool-header p { font-size: 0.72rem; }
      .tool-badge { font-size: 0.55rem; padding: 1px 6px; }

      .btn { padding: 10px 16px; font-size: 0.85rem; border-radius: 10px; }
      .btn-sm { padding: 6px 11px; font-size: 0.78rem; }

      .report-form-grid { grid-template-columns: 1fr; }
      .grade-board-tabs, .grade-mode-selector { flex-wrap: wrap; }
      .grade-board-tab, .grade-mode-btn { font-size: 0.75rem; padding: 7px; }
      .grade-result-box .grade-letter { font-size: 2.8rem; }

      .streak-display { gap: 14px; padding: 12px; }
      .streak-count { font-size: 1.6rem; }
      .streak-flame { font-size: 2rem; }

      /* Fix session row inputs on mobile */
      .session-row { flex-wrap: wrap; gap: 6px; }
      .session-row input { min-width: 0; }
      .session-row input[style*="width:60px"],
      .session-row input[style*="width: 60px"] { width: calc(50% - 4px) !important; flex: none !important; }
      .session-row input[style*="flex:2"],
      .session-row input[style*="flex: 2"] { width: 100% !important; flex: none !important; }

      .pp-board-tabs { gap: 4px; }
      .pp-board-tab { font-size: 0.78rem; padding: 9px 8px; }
      .pp-subject-grid { grid-template-columns: repeat(3, 1fr); gap: 6px; }
      .pp-subject-card { padding: 8px; }
      .pp-subject-card .pp-subj-icon { font-size: 1.2rem; }
      .pp-subject-card .pp-subj-name { font-size: 0.72rem; }
      .pp-subject-card .pp-subj-code { font-size: 0.6rem; }
      .pp-paper-item { flex-direction: column; align-items: flex-start; }
      .pp-paper-links { flex-wrap: wrap; }
      .pp-site-grid { grid-template-columns: repeat(2, 1fr); }

      .notes-hub-tabs { gap: 4px; }
      .notes-hub-tab { font-size: 0.72rem; padding: 7px 6px; min-width: unset; }
      .nh-online-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
      .nh-online-card { padding: 12px; }

      .gen-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
      .gen-card { padding: 14px 12px; }
      .gen-card .gen-icon { font-size: 1.6rem; }
      .gen-card .gen-name { font-size: 0.82rem; }
      .gen-card .gen-desc { font-size: 0.7rem; }

      .pomo-ring { width: 130px; height: 130px; }
      .pomo-ring .pomo-time-inside { font-size: 1.4rem; }
      .pomo-ring svg { width: 130px; height: 130px; }

      .countdown-ring { width: 120px; height: 120px; }
      .countdown-ring svg { width: 120px; height: 120px; }
      .countdown-days .num { font-size: 1.7rem; }

      .wheel-container { width: 170px; height: 170px; }
      canvas#wheelCanvas { width: 170px !important; height: 170px !important; }

      .task-input-row { flex-wrap: wrap; }
      .task-input-row input[style*="flex:1"] { width: 100%; }
      .task-input-row input[style*="width:70px"], .task-input-row span { order: 3; }

      .grade-row { flex-wrap: wrap; }
      .grade-row input { min-width: 60px; }

      .att-table { font-size: 0.72rem; }
      .att-btn { width: 26px; height: 26px; font-size: 0.78rem; }

      .planner-table { font-size: 0.62rem; }
      .planner-table th, .planner-table td { padding: 3px 2px; min-width: 36px; }

      #appCatTabs { gap: 5px; }
      .pp-filter-chip { padding: 5px 10px; font-size: 0.72rem; }

      .pts-panel { width: 100%; right: -100%; }
      .pts-balance .pb-val { font-size: 2.8rem; }

      #whatsappButton { width: 52px; height: 52px; bottom: 16px; right: 16px; }

      .instructor-btn { padding: 6px 10px; font-size: 0.76rem; }
      #instrBtns { gap: 6px; }

      .nh-points-earn { gap: 6px; }
      .nh-earn-item { min-width: 70px; padding: 8px 6px; }
      .nh-earn-item .nei-pts { font-size: 1.1rem; }

      .rest-day-btn { padding: 5px 10px; font-size: 0.78rem; }

      .tt-grid th, .tt-grid td { min-width: 48px; font-size: 0.62rem; }
      .tt-cell { font-size: 0.58rem; }

      /* iOS momentum scroll for overflow-x wrappers */
      [style*="overflow-x:auto"],
      [style*="overflow-x: auto"] { -webkit-overflow-scrolling: touch; }

      /* Fix width:auto inputs & selects on mobile to not overflow */
      .tool-card input[style*="width:auto"],
      .tool-card select[style*="width:auto"] { width: 100% !important; flex: 1 1 auto !important; }
    }

    /* Extra small — very narrow phones */
    @media (max-width: 380px) {
      .topnav-title { display: none; }
      .tools-tab { padding: 6px 10px; font-size: 0.7rem; }
      .pp-subject-grid { grid-template-columns: repeat(2, 1fr); }
      .gen-grid { grid-template-columns: 1fr; }
      .nh-online-grid { grid-template-columns: 1fr; }
      .pp-site-grid { grid-template-columns: 1fr; }
    }

/* ══════════════════════════════════════════════════════
   TOOL SHELL — hub + individual tool page layout
   Clean, card-based layout inspired by it-tools.tech
══════════════════════════════════════════════════════ */

a[rel="noopener"] { }

.ti { line-height: 1; vertical-align: -2px; }

/* ── Skip link ── */
.skip-link {
  position: absolute; left: -999px; top: 0;
  background: var(--primary); color: #fff; padding: 10px 16px;
  border-radius: 0 0 10px 0; z-index: 2000; font-weight: 700; font-size: 0.85rem;
}
.skip-link:focus { left: 0; }

/* ── Topnav additions ── */
.topnav-back {
  display: flex; align-items: center; gap: 6px;
  color: rgba(255,255,255,0.85); font-weight: 700; font-size: 0.85rem;
  text-decoration: none; flex-shrink: 0;
}
.topnav-back:hover { color: #fff; }
.topnav-title-wrap { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; justify-content: center; }
.topnav-title-wrap .ti { font-size: 1.1rem; color: #fff; }

/* ── Page shell ── */
.tool-page-main { max-width: 880px; margin: 0 auto; padding: 28px 20px 70px; }
.tool-page-header { display: flex; align-items: flex-start; gap: 16px; margin-bottom: 22px; }
.tool-page-icon {
  width: 54px; height: 54px; border-radius: 16px; flex-shrink: 0;
  background: var(--primary);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(79,168,157,0.28), inset 0 1px 0 rgba(255,255,255,0.2);
}
.tool-page-icon .ti { font-size: 1.6rem; color: #fff; }
.tool-page-title { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 1.4rem; color: var(--primary); line-height: 1.25; }
.tool-page-desc { font-size: 0.9rem; color: var(--muted); margin-top: 4px; line-height: 1.5; }
.tool-page-badges { display: flex; gap: 6px; margin-top: 8px; flex-wrap: wrap; }

/* Tool page content reuses .tool-card as the widget container, flattened */
.tool-page-main .tool-card {
  box-shadow: 0 1px 3px rgba(79,168,157,0.06), 0 8px 24px rgba(79,168,157,0.08);
}
.tool-page-main .tool-card::before,
.tool-page-main .tool-card::after { display: none; }
.tool-page-main .tool-header { display: none; } /* title already shown in page header */

/* ── Related tools ── */
.related-tools { margin-top: 28px; }
.related-tools h3 { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 0.95rem; color: var(--primary); margin-bottom: 12px; }
.related-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 10px; }
.related-card {
  display: flex; align-items: center; gap: 10px; padding: 12px 14px;
  background: var(--card); border: 1.5px solid var(--border); border-radius: 12px;
  text-decoration: none; color: var(--text); transition: 0.2s;
}
.related-card:hover { border-color: var(--primary); transform: translateY(-2px); box-shadow: 0 6px 16px rgba(79,168,157,0.1); }
.related-card .ti { font-size: 1.2rem; color: var(--primary); flex-shrink: 0; }
.related-card span { font-size: 0.82rem; font-weight: 700; }

/* ══════════════════════════════════════════════════════
   HUB PAGE (tools/index.html)
══════════════════════════════════════════════════════ */
.hub-hero {
  background:
    linear-gradient(rgba(60,45,30,0.5), rgba(60,45,30,0.5)),
    url('../../assets/img/abstract-shapes-cropped.jpg');
  background-size: cover;
  background-position: center;
  padding: 44px 20px 34px;
  text-align: center;
  color: #fff;
}
.hub-hero h1 { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: clamp(1.6rem, 4vw, 2.3rem); margin-bottom: 8px; }
.hub-hero p { color: rgba(255,255,255,0.75); font-size: 0.95rem; max-width: 520px; margin: 0 auto; }

.hub-search-wrap { max-width: 560px; margin: 22px auto 0; position: relative; }
.hub-search-wrap .ti { position: absolute; left: 16px; top: 50%; transform: translateY(-50%); color: var(--muted); font-size: 1.1rem; }
#hubSearch {
  width: 100%; padding: 13px 16px 13px 44px; border-radius: 999px; border: none;
  font-family: 'Nunito', sans-serif; font-size: 0.92rem; outline: none;
  box-shadow: 0 8px 24px rgba(0,0,0,0.25);
}

.hub-main { max-width: 1160px; margin: 0 auto; padding: 28px 20px 70px; }

.hub-filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 22px; }
.hub-filter-chip {
  padding: 8px 16px; border-radius: 999px; border: 1.5px solid var(--border);
  background: var(--card); color: var(--text); font-size: 0.82rem; font-weight: 700;
  cursor: pointer; transition: 0.2s; display: flex; align-items: center; gap: 6px;
}
.hub-filter-chip .ti { font-size: 0.95rem; }
.hub-filter-chip:hover { border-color: var(--primary); }
.hub-filter-chip.active { background: var(--primary); border-color: var(--primary); color: #fff; }

.hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
}
.hub-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
  position: relative;
}
.hub-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary);
  box-shadow: 0 10px 26px rgba(79,168,157,0.12);
}
.hub-card-icon {
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--primary-light, #EEEBFF);
  display: flex; align-items: center; justify-content: center;
}
.hub-card-icon .ti { font-size: 1.3rem; color: var(--primary); }
/* it-tools.tech-style: give every card its own accent color instead of one flat tone, so the grid reads at a glance */
.hub-grid > .hub-card:nth-of-type(8n+1) .hub-card-icon { background: #E0DCFF; }
.hub-grid > .hub-card:nth-of-type(8n+1) .hub-card-icon .ti { color: #c2410c; }
.hub-grid > .hub-card:nth-of-type(8n+2) .hub-card-icon { background: #d8f5e8; }
.hub-grid > .hub-card:nth-of-type(8n+2) .hub-card-icon .ti { color: #1a6b35; }
.hub-grid > .hub-card:nth-of-type(8n+3) .hub-card-icon { background: #e8eeff; }
.hub-grid > .hub-card:nth-of-type(8n+3) .hub-card-icon .ti { color: #1a2a7a; }
.hub-grid > .hub-card:nth-of-type(8n+4) .hub-card-icon { background: #fde8f5; }
.hub-grid > .hub-card:nth-of-type(8n+4) .hub-card-icon .ti { color: #7a1a5a; }
.hub-grid > .hub-card:nth-of-type(8n+5) .hub-card-icon { background: #f0e8fd; }
.hub-grid > .hub-card:nth-of-type(8n+5) .hub-card-icon .ti { color: #4a1a7a; }
.hub-grid > .hub-card:nth-of-type(8n+6) .hub-card-icon { background: #fff3cd; }
.hub-grid > .hub-card:nth-of-type(8n+6) .hub-card-icon .ti { color: #856404; }
.hub-grid > .hub-card:nth-of-type(8n+7) .hub-card-icon { background: #e0f7fa; }
.hub-grid > .hub-card:nth-of-type(8n+7) .hub-card-icon .ti { color: #006064; }
.hub-grid > .hub-card:nth-of-type(8n+8) .hub-card-icon { background: #fde8e8; }
.hub-grid > .hub-card:nth-of-type(8n+8) .hub-card-icon .ti { color: #7a1a2a; }
body.dark .hub-grid > .hub-card .hub-card-icon { filter: brightness(0.85) saturate(1.3); }
.hub-card h2 { font-family: 'Nunito', sans-serif; font-weight: 800; font-size: 0.95rem; color: var(--text); }
.hub-card p { font-size: 0.78rem; color: var(--muted); line-height: 1.45; flex: 1; }
.hub-card-tag {
  align-self: flex-start; font-size: 0.6rem; font-weight: 800; text-transform: uppercase;
  letter-spacing: 0.08em; padding: 2px 8px; border-radius: 999px;
}
.hub-card[data-category="student"] .hub-card-tag { background: #E0DCFF; color: #4338CA; }
.hub-card[data-category="teacher"] .hub-card-tag { background: #d8f5e8; color: #1a6b35; }
.hub-card[data-category="both"] .hub-card-tag { background: #e8eeff; color: #1a2a7a; }
.hub-card.hidden-card { display: none; }
#hubNoResults { display: none; text-align: center; padding: 50px 20px; color: var(--muted); }
#hubNoResults .ti { font-size: 2.2rem; margin-bottom: 10px; display: block; }

body.dark .hub-hero p { color: rgba(255,255,255,0.7); }

/* ── Dark mode (kept consistent with the main site's toggle/localStorage key) ── */
body.dark {
  --primary: #D9945F;
  --peach: #C7B08A;
  --bg: #21201B;
  --card: #2B2822;
  --text: #F3ECE2;
  --muted: #BEB3A2;
  --border: #43392C;
  --primary-light: #2B2822;
}
body.dark .tool-card input,
body.dark .tool-card select,
body.dark .tool-card textarea { background: #1A1638; color: var(--text); }
body.dark #hubSearch { background: #211C45; color: var(--text); }
body.dark #hubSearch::placeholder { color: var(--muted); }

.dark-toggle-btn {
  background: rgba(255,255,255,0.18); border: 1px solid rgba(255,255,255,0.55); border-radius: 999px;
  width: 34px; height: 34px; display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: #fff; flex-shrink: 0; transition: 0.2s;
}
.dark-toggle-btn:hover { background: rgba(255,255,255,0.3); }
.dark-toggle-btn .ti { font-size: 1.05rem; }

/* ── AI Tutor ── */
.tutor-notes-toggle { background: none; border: none; color: var(--primary); font-weight: 700; font-size: 0.8rem; cursor: pointer; padding: 4px 0; display: flex; align-items: center; gap: 4px; }
.tutor-chat { display: none; flex-direction: column; height: 480px; max-height: 65vh; border: 2px solid var(--border); border-radius: 16px; overflow: hidden; background: var(--bg); }
.tutor-chat-log { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.tutor-msg { max-width: 82%; padding: 10px 14px; border-radius: 16px; font-size: 0.88rem; line-height: 1.55; white-space: pre-wrap; }
.tutor-msg p { margin: 0 0 6px; }
.tutor-msg p:last-child { margin-bottom: 0; }
.tutor-msg.tutor { align-self: flex-start; background: var(--primary-light,#EEEBFF); color: var(--text); border-bottom-left-radius: 4px; }
.tutor-msg.student { align-self: flex-end; background: var(--primary); color: #fff; border-bottom-right-radius: 4px; }
.tutor-msg.system-note { align-self: center; background: transparent; color: var(--muted); font-size: 0.76rem; text-align: center; max-width: 100%; }
.tutor-typing { align-self: flex-start; color: var(--muted); font-size: 0.8rem; padding: 0 4px; }
.tutor-chat-inputrow { display: flex; gap: 8px; padding: 10px; border-top: 2px solid var(--border); background: var(--card,#fff); }
.tutor-chat-inputrow textarea { flex: 1; margin: 0; resize: none; min-height: 42px; max-height: 100px; }
.tutor-chat-inputrow button { width: auto; margin: 0; flex-shrink: 0; padding: 0 16px; }
.tutor-session-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; font-size: 0.8rem; color: var(--muted); }
.tutor-session-bar strong { color: var(--primary); }
body.dark .tutor-chat-inputrow { background: var(--card); }
body.dark .tutor-msg.tutor { background: #332C55; }